The Neutrino in USP Field Theory: Residual Leptonic Corridor Fragments, Near-c Propagation, Flavor Drift, and Resonance-Gated Detection

This document presents a USP Field Theory interpretation of the neutrino while preserving the Standard Model, PMNS oscillation framework, MSW matter effects, and established neutrino experiments as the quantitative baseline. The central interpretation is that a neutrino is a residual leptonic corridor fragment: a weakly accessible propagating structure produced when a nuclear or leptonic reorganization event cannot absorb all mismatch into charged, baryonic, or electromagnetic channels. In neutron beta decay, n -> p+ + e- + anti-neutrinoₑ, the proton is interpreted as the positive baryonic re-locking channel, the electron as the charged leptonic corridor, and the antineutrino as the boundary-inverted residual escape mode. Detection is treated as resonance-gated: |Delta fₙu - Delta fdet| < Gammadet. When the detector corridor does not satisfy this compatibility condition, the neutrino is not absent; the detector simply records no uptake. Flavor is interpreted as corridor topology drift, while the standard PMNS framework remains the predictive reference. This record includes: Includes high-resolution cover, companion poster, and six visual figures: Figure 1 — Residual Leptonic Corridor Fragment Figure 2 — Resonance-Gated Detection Figure 3 — Flavor as Topology Drift Figure 4 — Antineutrino as Boundary-Inverted Escape Mode Figure 5 — Majorana-Dirac Question in USP Language Figure 6 — Earth as a Resonance Filter